leocrm/.a0/briefings/T07b_briefing.md

# T07b Briefing — Frontend Feature Pages

## Project Root
/a0/usr/workdir/dev-projects/leocrm

## Frontend Directory
/a0/usr/workdir/dev-projects/leocrm/frontend/

## Task
Build all feature pages for the LeoCRM SPA. T07a (shell, auth, routing, i18n, UI library) is complete.

## Tech Stack (already set up by T07a)
- React 18 + Vite + TypeScript (strict)
- TanStack Query v5 (hooks in src/api/hooks.ts)
- Zustand (stores in src/store/)
- react-i18next (de/en, src/i18n/)
- React Hook Form + Zod
- Tailwind CSS with design tokens
- Vitest + @testing-library/react

## Existing API Hooks (src/api/hooks.ts)
- useCompanies(page, pageSize, search) → { items, total, page, page_size }
- useContacts(page, pageSize, search) → { items, total, page, page_size }
- useUsers(page, pageSize) → paginated users
- useCurrentUser() → current user
- useNotifications() → notifications list
- usePlugins() → plugins list
- useLogin(), useLogout(), useSwitchTenant()
- API client: src/api/client.ts (axios, withCredentials, 401→login, 422→validation)

## Backend API Endpoints
- GET /api/v1/companies?page=1&page_size=25&search=...&industry=...&sort_by=...&sort_order=...
- GET /api/v1/companies/{id} → CompanyDetailResponse (includes contacts[])
- POST /api/v1/companies
- PATCH /api/v1/companies/{id}
- DELETE /api/v1/companies/{id}
- GET /api/v1/companies/export?format=csv&search=...&industry=...
- POST /api/v1/companies/import (CSV upload)
- GET /api/v1/contacts?page=1&page_size=25&search=...
- GET /api/v1/contacts/{id} → ContactDetailResponse (includes companies[])
- POST /api/v1/contacts
- PATCH /api/v1/contacts/{id}
- DELETE /api/v1/contacts/{id}
- GET /api/v1/users?page=1&page_size=25
- GET /api/v1/users/{id}
- POST /api/v1/users
- PATCH /api/v1/users/{id}
- DELETE /api/v1/users/{id}
- GET /api/v1/notifications
- GET /api/v1/plugins
- GET /health

Note: No dedicated audit log or global search API endpoint exists yet. For audit log, create a frontend page that calls GET /api/v1/audit (may 404 — handle gracefully with empty state). For global search, call useCompanies and useContacts with search param in parallel.

## Company Schema (from backend)
- name: string (required, 1-100)
- account_number: string? (max 40)
- industry: string? (max 50)
- phone: string? (max 30)
- email: string? (max 255)
- website: string? (max 500)
- description: string?
- CompanyDetailResponse adds: contacts: list[dict]

## Files to Create/Modify

### New API Hooks (add to src/api/hooks.ts)
- useCompany(id), useCreateCompany(), useUpdateCompany(), useDeleteCompany()
- useContact(id), useCreateContact(), useUpdateContact(), useDeleteContact()
- useCompanyExport(), useCompanyImport()
- useAuditLog(page, pageSize, filters)
- useGlobalSearch(query, entityTypes)

### New Pages (src/pages/)
- CompaniesList.tsx — TanStack Table with search/filter/sort/pagination, empty state
- CompanyDetail.tsx — Tabs: overview, contacts, files, activity
- CompanyForm.tsx — Create/edit with React Hook Form + Zod
- ContactsList.tsx — TanStack Table, loading skeleton
- ContactDetail.tsx — Tabs: overview, companies, files, activity
- ContactForm.tsx — Create/edit with multi-company assignment
- AuditLog.tsx — Filterable table (date, user, action, entity)
- GlobalSearchResults.tsx — Filters (entity type, date), highlighting
- SettingsProfile.tsx — Update name, email, password, avatar
- SettingsRoles.tsx — Role editor: create, assign permissions
- SettingsUsers.tsx — User management: list, invite, change role, deactivate

### Modify Existing Pages
- Dashboard.tsx — Expand with stat cards + recent activity feed
- Settings.tsx — Add tree navigation (Profile, Roles, Users, System)

### New Components (src/components/)
- SearchDropdown.tsx — Global search dropdown in topbar
- StatCard.tsx — Dashboard stat card
- ActivityFeed.tsx — Recent activity feed
- Tabs.tsx — Reusable tab component for detail pages
- DataGrid.tsx — Wrapper around TanStack Table for list pages
- CsvImportDialog.tsx — CSV upload → preview → import
- UnsavedChangesGuard.tsx — Warn on navigation away with unsaved changes

### Update Routes (src/routes/index.tsx)
Add routes for all new pages under ProtectedRoute children:
- /companies, /companies/:id, /companies/new, /companies/:id/edit
- /contacts, /contacts/:id, /contacts/new, /contacts/:id/edit
- /audit-log
- /search?q=...
- /settings/profile, /settings/roles, /settings/users

### Tests (src/__tests__/)
- companies/CompaniesList.test.tsx, CompanyDetail.test.tsx, CompanyForm.test.tsx
- contacts/ContactsList.test.tsx, ContactDetail.test.tsx, ContactForm.test.tsx
- settings/SettingsProfile.test.tsx, SettingsRoles.test.tsx, SettingsUsers.test.tsx
- dashboard/Dashboard.test.tsx
- search/GlobalSearch.test.tsx
- AuditLog.test.tsx

## Acceptance Criteria (23 total)
1. Companies list renders with TanStack Table (search, filter, sort, pagination)
2. Company detail renders with tabs (overview, contacts, files, activity)
3. Company form validates required fields (name) with Zod
4. Company import: CSV upload → preview → import → success toast
5. Company export: download CSV with current filters
6. Contacts list renders with TanStack Table
7. Contact detail renders with tabs (overview, companies, files, activity)
8. Contact form validates required fields (first_name, last_name, email) with Zod
9. Contact can be assigned to multiple companies
10. Settings renders with tree navigation (Profile, Roles, Users, System)
11. Profile settings: update name, email, password, avatar
12. Role editor: create role, assign permissions, save
13. User management: list users, invite user, change role, deactivate
14. Audit log renders with filterable table (date, user, action, entity)
15. Dashboard renders with stat cards and recent activity feed
16. Global search bar in topbar returns results dropdown
17. Global search results page renders with filters (entity type, date)
18. Search results highlight matched terms
19. Search works across companies, contacts (v1 scope)
20. Companies list: empty state shows helpful message + create button
21. Contacts list: loading state shows skeleton rows
22. Company form: error state shows inline validation errors
23. Settings: unsaved changes warning when navigating away

## Test Commands
```bash
cd /a0/usr/workdir/dev-projects/leocrm/frontend && npx vitest run src/__tests__/companies/ src/__tests__/contacts/ src/__tests__/settings/ src/__tests__/dashboard/ src/__tests__/search/ --reporter=verbose
cd /a0/usr/workdir/dev-projects/leocrm/frontend && npm run build
cd /a0/usr/workdir/dev-projects/leocrm/frontend && npx tsc --noEmit
```

## Rules
- TypeScript only, no .js files
- No Lorem Ipsum — use real German/English content
- All interactive elements need ARIA labels
- 44px minimum touch targets on mobile
- Use existing UI components from T07a (Button, Input, Select, Modal, Toast, Table, Card, Badge, Avatar, Pagination, EmptyState, Skeleton, ConfirmDialog)
- Use existing i18n setup — add new keys to de.json and en.json
- Use existing API client (src/api/client.ts) — don't create new axios instances
- Coverage target: 80%
- Keep responses under 50 lines
- Use files_create for new files, reference by path

## Deliverables
1. All files created and tests passing
2. npm run build succeeds with 0 errors
3. tsc --noEmit passes with 0 errors
4. Report: test results, AC coverage, files created, bugs encountered